Assessment of testcross performance and genetic diversity of yellow endosperm maize lines derived from adapted x exotic backcrosses.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Abebe MenkirB I Vroh

Abstract

Introduction of exotic maize (Zea mays L.) into adapted tropical germplasm may enhance genetic variability and lead to greater progress from selection. The first objective of this study was to determine if yellow endosperm lines derived from adapted x exotic backcrosses contain exotic alleles that are superior to the recurrent adapted parental line for yield and other agronomic traits in tropical environments. Thirteen exotic yellow maize inbred lines were crossed to an adapted orange line (KUSR) and the F1s were backcrossed to KUSR to generate the first backcrosses. Fifty BC1F4 lines derived from these backcrosses and the recurrent parent were crossed to a common inbred tester (L4001) to form testcrosses, which were evaluated at eight environments in Nigeria. Testcrosses of the BC-derived lines differed significantly for grain yield and other agronomic traits. Only two testcrosses yielded significantly less than L4001 x KUSR, with the best 15 testcrosses producing between 289 and 1,056 kg/ha more grain yield than L4001 x KUSR. The best testcrosses were similar to or better than L4001 x KUSR for other agronomic traits. The second objective of this study was to assess the extent of genetic diversity present among the BC-derived ...Continue Reading

References

Nov 11, 1995·Nucleic Acids Research·P VosM Kuiper
Jun 7, 1994·Proceedings of the National Academy of Sciences of the United States of America·M A Saghai MaroofR W Allard
Aug 10, 2000·Journal of Pharmaceutical and Biomedical Analysis·C YeN Okafo
Jul 16, 2003·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·R S Lewis, M M Goodman
Apr 20, 2004·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·J A TarterJ B Holland

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Citations

Aug 8, 2013·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·C MirA Charcosset
Nov 30, 2019·Frontiers in Plant Science·Melaku Gedil, Abebe Menkir

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